Bing Lu, Fangge Fu, Xiaoxia Zhang, Xianglei Yan, Xiaojin Guo. Photonics-Assisted Sensing of Non-Repetitive Transient Weak Signal with Sensitivity Enhancement[J]. Acta Optica Sinica, 2023, 43(10): 1025001
- Acta Optica Sinica
- Vol. 43, Issue 10, 1025001 (2023)
Fig. 1. Schematic diagram of spectral cloning receiver based on frequency-shifted multiple local OFC
Fig. 2. Architecture of spectral cloning receiver based on frequency-shifted local OFC
Fig. 3. Power spectrum and phase spectrum of transient pulse signal. (a) Power spectrum; (b) phase spectrum
Fig. 4. Comparison of simulation results of original local OFC and shifted local OFC
Fig. 5. Comparison of detection sensitivity between normal receiver and proposed frequency shifting cloning receiver
Fig. 6. Comparison between measured sensitivity gain of frequency shifting cloning receiver and theoretical gain value
Fig. 7. Measured result of detection sensitivity under different numbers of local OFCs
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